55186108891860 has 48 divisors (see below), whose sum is σ = 162653794632000. Its totient is φ = 13941753825024.

The previous prime is 55186108891787. The next prime is 55186108891919. The reversal of 55186108891860 is 6819880168155.

It is a super-2 number, since 2×55186108891860² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55186108891791 and 55186108891800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24204432585 + ... + 24204434864.

It is an arithmetic number, because the mean of its divisors is an integer number (3388620721500).

Almost surely, 2^{55186108891860} is an apocalyptic number.

It is an amenable number.

55186108891860 is an abundant number, since it is smaller than the sum of its proper divisors (107467685740140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55186108891860 is a wasteful number, since it uses less digits than its factorization.

55186108891860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48408867480 (or 48408867478 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 66.

The spelling of 55186108891860 in words is "fifty-five trillion, one hundred eighty-six billion, one hundred eight million, eight hundred ninety-one thousand, eight hundred sixty".